1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 *   ALSA sequencer Client Manager
 4 *   Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
 5 */
 6#ifndef __SND_SEQ_CLIENTMGR_H
 7#define __SND_SEQ_CLIENTMGR_H
 8
 9#include <sound/seq_kernel.h>
10#include <linux/bitops.h>
11#include "seq_fifo.h"
12#include "seq_ports.h"
13#include "seq_lock.h"
14
15
16/* client manager */
17
18struct snd_seq_user_client {
19	struct file *file;	/* file struct of client */
20	/* ... */
21	struct pid *owner;
22	
23	/* fifo */
24	struct snd_seq_fifo *fifo;	/* queue for incoming events */
25	int fifo_pool_size;
26};
27
28struct snd_seq_kernel_client {
29	/* ... */
30	struct snd_card *card;
31};
32
33
34struct snd_seq_client {
35	snd_seq_client_type_t type;
36	unsigned int accept_input: 1,
37		accept_output: 1;
 
 
38	char name[64];		/* client name */
39	int number;		/* client number */
40	unsigned int filter;	/* filter flags */
41	DECLARE_BITMAP(event_filter, 256);
 
42	snd_use_lock_t use_lock;
43	int event_lost;
44	/* ports */
45	int num_ports;		/* number of ports */
46	struct list_head ports_list_head;
47	rwlock_t ports_lock;
48	struct mutex ports_mutex;
49	struct mutex ioctl_mutex;
50	int convert32;		/* convert 32->64bit */
 
51
52	/* output pool */
53	struct snd_seq_pool *pool;		/* memory pool for this client */
54
55	union {
56		struct snd_seq_user_client user;
57		struct snd_seq_kernel_client kernel;
58	} data;
 
 
 
59};
60
61/* usage statistics */
62struct snd_seq_usage {
63	int cur;
64	int peak;
65};
66
67
68int client_init_data(void);
69int snd_sequencer_device_init(void);
70void snd_sequencer_device_done(void);
71
72/* get locked pointer to client */
73struct snd_seq_client *snd_seq_client_use_ptr(int clientid);
74
75/* unlock pointer to client */
76#define snd_seq_client_unlock(client) snd_use_lock_free(&(client)->use_lock)
77
78/* dispatch event to client(s) */
79int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop);
80
81int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait);
82int snd_seq_client_notify_subscription(int client, int port,
83				       struct snd_seq_port_subscribe *info, int evtype);
84
 
 
 
 
 
85/* only for OSS sequencer */
86bool snd_seq_client_ioctl_lock(int clientid);
87void snd_seq_client_ioctl_unlock(int clientid);
88
89extern int seq_client_load[15];
 
 
 
 
 
 
 
 
 
 
 
 
 
 
90
91#endif

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 *   ALSA sequencer Client Manager
  4 *   Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
  5 */
  6#ifndef __SND_SEQ_CLIENTMGR_H
  7#define __SND_SEQ_CLIENTMGR_H
  8
  9#include <sound/seq_kernel.h>
 10#include <linux/bitops.h>
 11#include "seq_fifo.h"
 12#include "seq_ports.h"
 13#include "seq_lock.h"
 14
 
 15/* client manager */
 16
 17struct snd_seq_user_client {
 18	struct file *file;	/* file struct of client */
 19	/* ... */
 20	struct pid *owner;
 21	
 22	/* fifo */
 23	struct snd_seq_fifo *fifo;	/* queue for incoming events */
 24	int fifo_pool_size;
 25};
 26
 27struct snd_seq_kernel_client {
 28	/* ... */
 29	struct snd_card *card;
 30};
 31
 32
 33struct snd_seq_client {
 34	snd_seq_client_type_t type;
 35	unsigned int accept_input: 1,
 36		accept_output: 1;
 37	unsigned int midi_version;
 38	unsigned int user_pversion;
 39	char name[64];		/* client name */
 40	int number;		/* client number */
 41	unsigned int filter;	/* filter flags */
 42	DECLARE_BITMAP(event_filter, 256);
 43	unsigned short group_filter;
 44	snd_use_lock_t use_lock;
 45	int event_lost;
 46	/* ports */
 47	int num_ports;		/* number of ports */
 48	struct list_head ports_list_head;
 49	rwlock_t ports_lock;
 50	struct mutex ports_mutex;
 51	struct mutex ioctl_mutex;
 52	int convert32;		/* convert 32->64bit */
 53	int ump_endpoint_port;
 54
 55	/* output pool */
 56	struct snd_seq_pool *pool;		/* memory pool for this client */
 57
 58	union {
 59		struct snd_seq_user_client user;
 60		struct snd_seq_kernel_client kernel;
 61	} data;
 62
 63	/* for UMP */
 64	void **ump_info;
 65};
 66
 67/* usage statistics */
 68struct snd_seq_usage {
 69	int cur;
 70	int peak;
 71};
 72
 73
 74int client_init_data(void);
 75int snd_sequencer_device_init(void);
 76void snd_sequencer_device_done(void);
 77
 78/* get locked pointer to client */
 79struct snd_seq_client *snd_seq_client_use_ptr(int clientid);
 80
 81/* unlock pointer to client */
 82#define snd_seq_client_unlock(client) snd_use_lock_free(&(client)->use_lock)
 83
 84/* dispatch event to client(s) */
 85int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop);
 86
 87int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait);
 88int snd_seq_client_notify_subscription(int client, int port,
 89				       struct snd_seq_port_subscribe *info, int evtype);
 90
 91int __snd_seq_deliver_single_event(struct snd_seq_client *dest,
 92				   struct snd_seq_client_port *dest_port,
 93				   struct snd_seq_event *event,
 94				   int atomic, int hop);
 95
 96/* only for OSS sequencer */
 97bool snd_seq_client_ioctl_lock(int clientid);
 98void snd_seq_client_ioctl_unlock(int clientid);
 99
100extern int seq_client_load[15];
101
102/* for internal use between kernel sequencer clients */
103struct snd_seq_client *snd_seq_kernel_client_get(int client);
104void snd_seq_kernel_client_put(struct snd_seq_client *cptr);
105
106static inline bool snd_seq_client_is_ump(struct snd_seq_client *c)
107{
108	return c->midi_version != SNDRV_SEQ_CLIENT_LEGACY_MIDI;
109}
110
111static inline bool snd_seq_client_is_midi2(struct snd_seq_client *c)
112{
113	return c->midi_version == SNDRV_SEQ_CLIENT_UMP_MIDI_2_0;
114}
115
116#endif